question for Glen Stanton

joel_19

Glen I just looked at a Burhnam gas boiler installed last year. It's oversized big time at 198,000 input (p206??). it's on a cast iron rad system. The house needs maybe 100kbtu at best, more like 70 probably. I was thier to give them a price on repiping it, adding a 4 way valve and a Tekmar to make the house more comfy, which should also protect your boiler from self destructing do to cold return water and constant on offs . Question is there a way to down fire that boiler? Maybe by pluggging a couple of the nozzels on the gas train? any ideas? They just payed our friends the gas Nazi's big $$$ for this and really don't want to switch the whole thing.

Unknown

The boilers

can be down-fired a little but not that much. Plugging orifices is not an acceptable method of doing this though as it will disturb the flow of flue gasses through the boiler and possibly the byproducts of combustion. Contact our Tech. services people at 1-800-722-0720 and tell them what you have and they will give you the allowable orifice size to drop the firing rate a bit. Hope this helps.

Glenn

joel_16

thanx

I've got to get an actual model ## off it. I went there for an A/C quote and the whole thing snowballed from there.

Unknown

Joel

Try to get both the model and serial number before you call. That way they can tell what tubes and gas valve the boiler has.

Glenn

jerry scharf_2

a buffer tank

Joel,

Don't know how big the repipe is for the system, but you could add a moderate sized buffer tank and use that to deal with the oversized boiler. This can really help with the shoulder season issues, probably much better than down-firing.

jerry

S Ebels

Buffer tank

That is also a good option. Been there, done that, got the thankyou card from the customer. I piped it in series with the boiler on the supply side with the system pump pulling water out of the tank and sending downstream.

The only thing you have to be careful of whilst designing this method into a system is to ensure that the boiler doesn't condense due to low water temps for too long a period of time. A pump aquastat can help.